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IDE版本：struts2.5.8 + spring4.3.6 + hibernate5.2.8。 我是Java Web中的新工作者。 我仔细检查了我的代码之后，但该操作无法工作。 每次我在Tomcatv9.0中运行我的代码时，我的Chrome浏览器显示“HTTP状态404”类型的状态报告。 description：请求的资源不可用。为什么我的操作不能在我的javaWeb项目中工作？
的web.xml代码：
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="MyStrutsApp" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<!-- <param-value>/WEB-INF/applicationContext-*.xml,classpath*:applicationContext-*.xml</param-value> -->
<param-value>classpath:beans.xml</param-value>
</context-param>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
struts.xml中的代码：
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
"http://struts.apache.org/dtds/struts-2.5.dtd">
<struts>
<include file="struts-default.xml"></include>
<constant name="struts.i18n.encoding" value="UTF-8"></constant>
<constant name="struts.action.extension" value="do,action"></constant>
<constant name="struts.serve.static.browserCache" value="false"> </constant>
<constant name="struts.devMode" value="true" />
<constant name="struts.configuration.xml.reload" value="true"></constant>
<constant name="struts.enable.DynamicMethodInvocation" value="true" />
<package name="registration" extends="struts-default" namespace="/" >
<action name="user" class="userAction" method="add">
<result name="success">/registerSuccess.jsp</result>
<result name="fail">/registerFail.jsp</result>
<allowed-methods>add</allowed-methods>
</action>
</package>
</struts>
beens.xml代码：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<context:annotation-config />
<context:component-scan base-package="com.diyuan" />
<!--
<bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/spring" />
<property name="username" value="root" />
<property name="password" value="bjsxt" />
</bean>
-->
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<value>classpath:jdbc.properties</value>
</property>
</bean>
<bean id="dataSource" destroy-method="close"
class="org.apache.commons.dbcp2.BasicDataSource">
<property name="driverClassName"
value="${jdbc.driverClassName}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!--
<property name="annotatedClasses">
<list>
<value>com.bjsxt.model.User</value>
<value>com.bjsxt.model.Log</value>
</list>
</property>
-->
<property name="packagesToScan">
<list>
<value>com.diyuan.integration.model</value>
</list>
</property>
<property name="hibernateProperties">
<value>
org.hibernate.dialect.MySQL5Dialect
</value>
</property>
</bean>
<!--
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate5.HibernateTemplate">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>
-->
<bean id="txManager" class="org.springframework.orm.hibernate5.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<bean id="userDao" class="com.diyuan.integration.dao.impl.UserDaoImpl">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<bean id="userManager" class="com.diyuan.integration.service.impl.UserManagerImpl">
<property name="userDao" ref="userDao"/>
</bean>
<bean id="userAction" class="com.diyuan.integration.action.UserAction" scope="prototype">
<property name="um" ref="userManager"/>
</bean>
动作代码：
package com.diyuan.integration.action;
import javax.annotation.Resource;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Scope;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.stereotype.Component;
import com.diyuan.integration.model.User;
import com.diyuan.integration.service.UserManager;
import com.opensymphony.xwork2.ActionSupport;
public class UserAction extends ActionSupport {
private String username;
private String password;
private String password2;
private UserManager um;
public UserManager getUm() {
return um;
}
public void setUm(UserManager um) {
this.um = um;
}
@Override
public String execute() throws Exception {
User u = new User();
u.setUsername(username);
u.setPassword(password);
if(um.exists(u)) {
return "fail";
}
um.add(u);
return "success";
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getPassword2() {
return password2;
}
public void setPassword2(String password2) {
this.password2 = password2;
}
}
有很多的东西，可能会导致404错误。当您尝试访问该页面时，tomcat是否记录了任何内容？日志条目说什么？这是如何在tomcat中实际部署的，以及你访问哪个URL会产生404错误？ – Kenster